`Error: undefined reference to `QQmlDebuggingEnabler::QQmlDebuggingEnabler(bool)' when the specified method exists, how to fix
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<div class="content__item-row dn"> <a href="#!"><b>Fakov Stanislav</b>,</a> 2022-03-06 13:33:27</div>
<p class="content__item-title large">Error: undefined reference to `QQmlDebuggingEnabler::QQmlDebuggingEnabler(bool)' when the specified method exists, how to fix??</p>
<p class="content__item-detail sm">
New to Qml - Qt, I ask for a detailed answer. <br>
<br>
I'm trying to link a Qml module created in Qt Design Studio with a C++ implementation. <br>
This error appears in a certain file "qqmldebug.h", which is an embeded Qt file, and therefore I cannot change it without using chmod. <br>
<br>
I am attaching the code of my application and the "qqmldebug.h" file, as well as a screenshot of the errors, if it helps <br>
<br>
Tachometer.pro:<br>
<pre><code class="hljs">QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp
RESOURCES += \
$$files(qml/*)
HEADERS += \
mainwindow.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target</code></pre><br>
<br>
mainwindow.h:<br>
<pre><code class="cpp hljs"><span class="hljs-meta">#<span class="hljs-meta-keyword">ifndef</span> MAINWINDOW_H</span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">define</span> MAINWINDOW_H</span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QObject></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QMainWindow></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QGuiApplication></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QKeyEvent></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QVariant></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QtQuick/QQuickView></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QtQml/QQmlContext></span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QtQml/QQmlEngine></span></span>
QT_BEGIN_NAMESPACE
<span class="hljs-keyword">namespace</span> Ui { <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MainWindow</span>;</span> }
QT_END_NAMESPACE
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MainWindow</span> :</span> <span class="hljs-keyword">public</span> QMainWindow
{
Q_OBJECT
<span class="hljs-keyword">public</span>:
MainWindow(QWidget *parent = <span class="hljs-literal">nullptr</span>);
<span class="hljs-function">Q_INVOKABLE <span class="hljs-keyword">void</span> <span class="hljs-title">startStopAnimation</span><span class="hljs-params">()</span></span>;
~MainWindow();
<span class="hljs-keyword">private</span>:
Ui::MainWindow *ui;
QObject* root;
QQuickView view;
};
<span class="hljs-meta">#<span class="hljs-meta-keyword">endif</span> <span class="hljs-comment">// MAINWINDOW_H</span></span></code></pre><br>
<br>
mainwindow.cpp:<br>
<pre><code class="cpp hljs"><span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">"mainwindow.h"</span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">"ui_mainwindow.h"</span></span>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(<span class="hljs-keyword">new</span> Ui::MainWindow)
{
view.resize(<span class="hljs-number">1920</span>, <span class="hljs-number">1080</span>);
view.setResizeMode(QQuickView::ResizeMode::SizeRootObjectToView);
view.engine()->addImportPath(<span class="hljs-string">"/opt/Qt/Tools/QtDesignStudio-3.1.0-preview/lib/Qt/qml"</span>);
view.setSource(QUrl(<span class="hljs-string">"/home/y66ask34/QtPojects/qtQuickConv/qml/Qwerty/content/Screen01.ui.qml"</span>));
root = view.rootContext();
view.rootContext()->setContextProperty(<span class="hljs-string">"window"</span>, <span class="hljs-keyword">this</span>);
}
<span class="hljs-keyword">void</span> MainWindow::startStopAnimation()
{
QObject* timeLine = root->findChild<QObject*>(<span class="hljs-string">"moveTimeLine"</span>);
<span class="hljs-comment">//QObject* timeLineAnimation = timeLine->findChild<QObject*>("TimeLineAnimation");</span>
QObject* monitor = root->findChild<QObject*>(<span class="hljs-string">"text8"</span>);
<span class="hljs-keyword">int</span> counter = <span class="hljs-number">0</span>;
QVariant countFrame = QVariant(<span class="hljs-number">6000.0</span>);
<span class="hljs-keyword">while</span> (timeLine->property(<span class="hljs-string">"currentFrame"</span>) != timeLine->property(<span class="hljs-string">"endFrame"</span>))
{
<span class="hljs-keyword">if</span> (timeLine->property(<span class="hljs-string">"currentFrame"</span>).toInt() >= <span class="hljs-number">6000</span> <span class="hljs-keyword">and</span> timeLine->property(<span class="hljs-string">"currentFrame"</span>).toInt() <= <span class="hljs-number">10000</span>)
{
monitor->property(<span class="hljs-string">"Text"</span>) = counter;
counter++;
}
}
}
MainWindow::~MainWindow()
{
<span class="hljs-keyword">delete</span> ui;
}</code></pre><br>
<br>
main.cpp:<br>
<pre><code class="cpp hljs"><span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">"mainwindow.h"</span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string"><QApplication></span></span>
<span class="hljs-function"><span class="hljs-keyword">int</span> <span class="hljs-title">main</span><span class="hljs-params">(<span class="hljs-keyword">int</span> argc, <span class="hljs-keyword">char</span> *argv[])</span>
</span>{
<span class="hljs-function">QApplication <span class="hljs-title">a</span><span class="hljs-params">(argc, argv)</span></span>;
MainWindow w;
w.show();
<span class="hljs-keyword">return</span> a.exec();
}</code></pre><br>
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<div class="content__item-img large name-color-A"><span>A</span></div><span class="answer__name"><a href="#!">Alexander Ananiev</a>, 2022-03-06 <br/> @SaNNy32</span>
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<p class="answer__detail">Connect in qml project file<br>
<code class="hljs">QT += qml</code></p>
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